package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.auth.feign.MemberFeignServer;
import com.atguigu.common.utils.MemberRespVo;
import com.atguigu.gulimall.auth.vo.SocialUser;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

@Controller
public class OAuth2Controller {

    @Autowired
    private MemberFeignServer memberFeignServer;

    @GetMapping(value = "/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {
        Map<String, String> map = new HashMap<>(5);
        map.put("client_id", "2480716466");
        map.put("client_secret", "dd2e59a543cfa942b22a0111476af19f");
        map.put("grant_type", "authorization_code");
        map.put("redirect_uri", "http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code", code);

        //1、根据用户授权返回的code换取access_token
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<>(), map, new HashMap<>());
        if (response.getStatusLine().getStatusCode() == 200) {
            //获取到了access_token,转为通用社交登录对象
            String json = EntityUtils.toString(response.getEntity());
            //String json = JSON.toJSONString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);
            //知道了哪个社交用户
            //1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
            //登录或者注册这个社交用户
            System.out.println(socialUser.getAccess_token());
            //调用远程服务
            R oauthLogin = memberFeignServer.oauthLogin(socialUser);
            if (oauthLogin.getCode() == 0) {
                MemberRespVo memberRespVo = oauthLogin.getData(new TypeReference<MemberRespVo>() {
                });

                session.setAttribute("loginUser", memberRespVo);
                return "redirect:http://gulimall.com";
            }else{
                return "redirect:http://auth.gulimall.com/login.html";
            }
        }
        return "redirect:http://gulimall.com";
    }
}